Incubator or brooder and heat-controlling device therefor.



Nofvfizeef PATBNTED oc'r.18,19o4.

l H. A. BROOKS.

' INGUBATOR 0R BRooDER vAND HEAT GONTROL'LING 'DEVICE THEREPomAPPLICATION FILED FEBA. 1902. 4

N0 HODEL.

ne. trasse.

UNITED STATES Patented October 18, 1904.

PATENT OFFICE.

lllCUB/TOR OR BROQDER AND HEAT-CONTROLLING DEVICE THEREFOR.

SPECIFICATION forming part of Letters Patent No. 772,866, datedOctober'18, 1904.

' Application filed February 4, 1902. Serial No. 92,599. (No model.)

'To all whom t 11a/ay concern.-

Beit known that I, HARRY A. BRooKs, a resident of Los Angeles, in thecounty of Los Angeles and State of California, have invented new anduseful Improvements in Incubators or Brooders andHeat-ControllingDevicesTherefor, of which the followingis aspecification.

This invention relates to incubators; and some of the objects of theinventfon arey to provide an apparatus of this character which issim-ple in construction and positive and effective in operation.

Another object of the invention is to provide an-apparatus of thischaracter wherein heat is supplied by and distributed from a heatedliquid or other medium and to avoid friction as much as possible.

It is also an object of this invention to provide an vapparatusconstructedv to economize the use of fuel and not subjectto'disarrangement and wherein the heater is under control at all times.

With these and other, objects in view the into Fig. l thereof, there isillustrated an incubator and brooder provided with doors l, one whereofisillustrated in a closed and the other in an open position, and thesedoors are preferably hung or connected with the incubator by means ofhinges 2, pivotally connected at 8 with the incubator and rigidly at-Referring to the drawings, and particularly tached at the opposite endsthereof tothe edges of the doors, substantially as illustrated,

and. by means of the peculiar construction of the hinges 2 the drawers 4may be opened or drawn out while the doors lare shut as well as when thesame are open in the manner illustrated.' f A Referringnow particularlyto the heater shown in Figs. l and 2 of the drawings, referencecharacter A indicates an inner shell,

'which is preferablycorrugated substantially as illustrated in Fig. 1,and connected with the shell A by means of heads D and E is an outershell B, the whole constituting a boiler having an annular water-spacebetween the innershell A and the outer shell B vand the turns therefromby gravity through the pipe H back to the lower portion of thewaterchamber, whereby a complete cycleof the heating medium is eectedand a continuous circulation of the heating mediumsecured, as will be-readily understood.

A lamp or other heating devicemay be provided with a flange 1,constructed to enter lower portion of theboiler, Fig. 2, and the burnerO of the lamp or heating device is provided with apertures or openingsand is inclosed by the lower extension or flange of the boiler,which-rests upon a circular plate or disk below the burner, whereby anannular chamber N is formed with which communicates a pipe L, preferablyextending along the incubator above the floor and returning to the stackor chimney J upon the upper portion or end of the drawings.

The pipe or tube L is preferably provided with a lateral extensioncommunicating with the chamber Q, provided with a valve or cover R,connected with the yoke S, with which is connected a link or pull-rodlV, attached to the center of a diaphragm V upon the enenlarged end of apipe U, preferably containing alcohol or other liquid-having a highcoefHcient of expansion, and the pipe U preferably extends some distanceinto the eggchamber and is designed to be moved longitudinally thereinto a limited extent, so that the position of the valve R may beadliusted by means of a thumb-screw X, working in a threadedbearing-piece U, attached to the tube U and forced inwardly by a springY on said thumb-screw.

The chamber Q is preferably provided with an air-inlet port Q, having apivotcd cover Z to regulate the quantity of air admitted into thechamber to prevent the lamp or heating device from becoming extinguishedwhen the valve R is closed.

The valve R is first opened, so as to admit air into the chamber Q, fromwhich the air passes through the pipe L into the chamber N below theburner or lamp for the purpose of supporting combustion, as will bereadily understood, and the water-chamber between the inner shell A andthe outer shell B of the boiler becomes heated by the heat produced bythe burner or lamp, and as Soon as the liquid in said boiler shall havebecome heated in this manner the liquid therein rises to the top of theboiler and passes to the heating-chamber G through the pipe F, and whenthe liquid in said-chamber shall have become cooled it returns from saidchamber by way of the pipe H to the lower portion of the boiler, wherebya complete cycle of the heating medium is effected and a continuouscirculation of such medium is secured, as will be readily understood bythose skilled in the art to which this invention appertains. The heatedair and products of combustion from the burner rise from the inner shellthrough the Stack or chimney J and pass through the pipe L along theincubator and back to the annular chamber N below the burner, and duringsuch passage the fresh air is admitted through the valve R, is mingledwith the current of heating-air, and carried therewith to the burner.When the heat in the egg-chamber becomes too great or an excessivetemperature obtains therein, the fluid in the pipe U will expand, andthereby dilating the diaphragm V extend the pull-rod 7' and lower thevalve R, thereby shutting off the supply of fresh air to the burner,consequently decreasing the supply of oxygen thereto, with resultingdecrease of heat emitted from the burner.

It is not desired to limit this invention to the specific construction,combination, and arrangement of parts herein shown and described, andthe right is reserved to make all such changes in and modifications ofsame as come within the spirit and the scope of the invention.

l claim-` 1. An incubator provided with a heating device, a chimneytherefor, and connection between the upper part of said chimney and thelower part of said device, whereby the products of combustion pass fromsaid chimney through said connection and back to said device and athermostat in communication with said connection.

2. An incubator provided with a heating device, a chimney therefor, aconnection hetween the upper part of said chimney and the lower part ofsaid device, whereby the products of combustion pass from said chimneythrough said connection back to said dcvice.

3. An incubator provided with chambers, drawers in said chambers anddoors having extended hinges pivotcd to the incubator to permit thewithdrawal of the drawers when the doors are in either an open or closedposition and means for heating the incubator 4. An incubator providedwith a heating device, a boiler upon said device having a stack, returnconnection between said stack and said device, a warming-chamber,connections between the upper and lower portion of said boiler and saidchamber and a sighttube in the boiler.

5. An incubator provided with a heating device, a boiler upon saiddevice having a stack, connection between said stack and said device, awarming-chamber and connections between the upper and lower portion ofsaid boiler and said chamber andan automatic valve for controlling theadmission of air to the first-mentioned connection.

6. An incubator provided with a heating device having a chimney orstack, connection between the upper portion of the stack and the lowerportion of said device, an outlet in said connection, a valve for saidoutlet, and thermostatic means for operating said valve.

7. An incubator provided with a heating device, connection between theupper and lower parts of said device, whereby the products of combustionpass from said device through said connection and bacl; to the deviceand means in said connection for supplying fresh air to said device.

8. An incubator provided with a heating IOO IIO

9. An incubator provided" with a heating In witness that I claim theforegoingl have device, connection between the upper and hereuntosubscribed my name this 81st day of lower parts of said device, wherebythe prod- July 1901.

uctsof combustion pass from said device i 'HARRY A. BROOKS. 5 throughAsaid connection and back to the de- Witnesses:

vice and thermostatic means for supplying G. E. HARPHAM, fresh airtosaid device.

MATTIE MCGINNIS.

